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प्रश्न
A bulb is connected to a cell. How is the resistance of circuit affected if another identical bulb is connected (i) in series, (ii) in parallel, with the first bulb?
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उत्तर
(i) If another bulb is connected in series then the resistance of the wire will increase.
(ii) If another bulb is connected in parallel then resistance will decrease.
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संबंधित प्रश्न
State three differences between the primary and secondary cells.
Name the instrument used to control the current in an electric circuit.
(a) Complete the circuit given in Fig. by inserting between the terminals A and C. an ammeter.
(b) In the diagram, mark the polarity at the terminals of ammeter and indicate clearly the direction of flow of current in the circuit when the circuit is complete.
(c) Name and state the purpose of Rh in the circuit.
The unit of current is :
A charge 0.5 C passes through a cross section of a conductor in 5 s . Find the current .
The unit of potential difference is :
Draw a diagram showing two bulbs connected in series to a dry cell.
Write SI unit of
Electric current,
State the factors on which the electrical resistance of a wire depends.
